Method of treating bobbins



Feb, 13, 1945. D. 'MARlNsKY ErAL VMETHOD oF TREATING Boms Filed. .April5,' 194s f www .MNR NN y receiver.

Patented Feb. is, 194s uNrrr-:o STATES PATENT orsics This inventionrelates to what iscommonly referred to as bobblns used with the shuttlesof sewing machines or devicesof this type and kindV supporting threads,lines, cord and the like. llilore particularly. the invention relates tothe method of treating wounddevices oi!v this kind so as to establishbetween contacting strands of the device an .adhesion sumcient tomaintain the strands against accidental displacement or undesirableunwinding while at the same time facilitating `i'orceable removal of thestrands, and further to adding. lubricating properties to the strand.

The novelfeatures o! the invention willl be u maintaining the wax ii ata desired temperature.

understood from the following. description when taken together with theaccompanying drawing,

Fig. l is a diagrammatic sectional view indi- :ating in dotted lines thesubmersion oi.' a plu.

rality v,of bobbins, and in full lines the step oi' rotatlns the bobbinbasket or container in the removal of surplus coating materialtherefrom: and

` Fig.'2 is a diagrammatic sectional view showingl the step'ofdispensing the coated bobbins onto a In the construction of bobbins,spools-andv "other wound strand products of the type and kind underconsideration, particularly as taught in our prior application 423,934as well as in our A, Eatents 2,200,720 and 2,200,721-, it has been thepractice Yto mount Athe bobbins or other devices on -spindlcil. prior topartially or wholly submerging the saine ina coating material, and thento rotate these spindles to remove surplus coat- .ing or-satniatingmaterial. Thisfmethod of proao-.fdle 'il is riveted, as seenat Il. Thebar 20 carcedure.hasifbeen objectionable primarily'. from thestandpoliitotl the -loss' of time in'niounting the other devices on thespindles.

'To pvercwe the objectionable features to 'these known methods. we haveconceived a meth-e od which consists in simpiyzmounting a pluralityl vofbobbins\ or other devices in what misht be termed a basket of open workmaterial. nien we lbmerlethe ballet bobbinl therein llla.coatmg='oi;g,penetrating' solution, -allowing the lame to iilra'predetermined period ottime. .Then is raised from the solution andathigh speedlwhile still'contained within thevlt or container for saidsolution, to remove lilrpluscoatlngor saturatingmathe eetieaefeenu- Iemployee,

usal force. Then we automatically dump, dispense or otherwise remove theprocessed bobbins from the basket, after which the basket ls am illledand the above process` repeated. With this I. method. large quantitieser bobbing or other def vices can be speedily coated or otherwisetreated with wax or other materials. A l

. In the accompanying drawing isdiagrammati.- cally illustrated oneprocedure-in carryln out 5 the method,`in which Ill represents a vat ortank" in which is placed the coating o r saturatlng solution il tobeemployed. For purposes of this description the use Aof wax `or paraillnwill be described. At I2 is. shown a-suitable heater for It will appearthat the uPPeledse of the vatk Il fha; an inturned ilange portion I3 toprevent displacement -oI the wax. particularly in the vcen-` triiugaldischarge,later described.

- understood, however, that apparatus such' as genik erally indicated inapplication 423,934 can be employed, modined to the necessary-.extent indea ling with the diilerent structure disclosed in the .present case. At'I4 is shown aspindle which f carriesat the lower end thereof a basketor other so open work container I-i. This basket may comprise perforatedmaterial or may be in the form f; "'of a wire mesh construction.-

,11. The basket .Il has a circular peripheral wall "with ,openings I'Itherein, and this wall in- Qad cludes an lnturned top flange portion Il,which jleave'sa largeadmisslon opening IlV in the top 4of the basket.Transversing the lower edge porgtion of the wall` II is a substantiallytriangular "bar 20, to the central portion of which the spin- .ries atopposite sides thereof pintle bearings 22 'in which are mounted pintlepins 23, which also throughbearinge Nonhinged bottom plates l,foming thebottoms of the basket.

45 The bottom plates :ze 'which mim emo se termed "drop doors" 'haveopenings Il. to allow line position indioatedin Fig, l.v Thebott'omplatesor doors Il include centrally of the outer eil'lesthereoiclipbends Il adapted to engage projections!! on the wall Il to retainthe bottoms in Atthis time. ltwlll be linde!"'stoodthstnnytrpeotseeuringmeanscanbe and in someinstances'positive-medumped into the pan or receptacle 29.

chanical means may be employed to operate the doors 25 to move the sameinto open and closed position.

In Fig. 2 of the drawing the basket is shown in raised position abovethe vat or container I0, with the doors 25 in open position, and with apan or other receptacle 29 arranged beneathv the raised basket, so thatthe bobbins 30 may be After this operation the basket may be raisedstill further to remove the pan 29, the doors 25 moved into closedposition, and an additional supply of bobbins inserted in the basketthrough the opening I9.

The steps of the method of coating and saturating bobbins will beunderstood when taken in connection with the diagrammatic illustrationsin the drawing and the following statement. Starting with the lling ofthe basket l5 with the required numberof bobbins, the basket with thebobbins therein is then lowered into the dotted line position shown inFig. 1, and retained in this position for a predetermined period of timewhich may be automatically controlled in any desired manner. In thisconnection it will be understood that the time period will vary withproducts of diiferent types and kinds and with different coating andsaturating materials employed. I

When the time for coating or saturation has expired, the basket I5 israised into the full line position shown in Fig. l, after which theshaft or spindle I4 is rotated at high speed and centrifugal force willoperateto discharge all surplus material from the bobbins. Here again,this step in the operation or method of procedure will be controlled toinsure removal of all free or excess coating material.

Having completed the spinning or centrifugal discharge of surplus wax,the basket is now raised suiiiciently to permit insertion of the pan 29there beneath, after which the two doors 25 -will be dropped todischarge the bobbins into the pan 29, after which the basket is raisedto provide free removal of the pan, and the doors 25 are then closed'and the above operation repeated.

As taught in the application hereinbefore identiiied, the .dispensingand re-lling of the basket placement and unwlnding, thus eliminatingthe.

necessity of using conventional spools having side wall portions forholding the strands against displacement. The uniting of crossed strandsis not sufficient, however, to prevent normal withdrawal of the threador strand in the use of the bobbins.

It vwill be understood that thev size, shape and construction of thebasket will depend entirely upon the type and kind of wound thread orstrand product to be processed according to the invention. Whereconventional small bobbins are being processed, large quantities ofthese bobbins can be arranged in a comparatively small basket. In thehigh speed rotation of the basket for removal of surplus coatingmaterial, the bobbins will be maintained adjacent the peripheral wall I6of the basket and will also be shifted to various positions fromhorizontal to vertical. The bobbins arranged thus will dump readily ontothe receptacle or pan 29 when the doors 25 are lowered. 'I'he conicaltop of the bar 20 will also aid in this operation.

While our process is adaptable for use in the treatment of strand bodiesof any kind or class, regardless of how the strands are wound thereon,where such bodies include the cross wound strands, these strandsestablish what might be considered points of contact, and these willadhere in maintaining the accidental unwinding of the strands while atthe same time permitting unwinding of the strands in the use of thebobbin.

It will be understood that in the process of treating the bobbins orother bodies with was or other material which is heated, deiinitecontrol will be provided to maintain the desired temperature duringoperating conditions.v At the same time a deiinite control is providedfor the time of submersion of the bobbins in the body of wax, as willalso be true of the time period of rotation of the basket'in dispensingof surplus wax by action of centrifugal force. These time controls areimportant, particularly from the standpoint of automatic high speed ofproduction of bobbins and other bodies, according to the invention, andparticularly from the standpoint of producing all automatic operationsas much as possible. Furthermore, lby definitely controlling the timeperiod of the diierent steps of the method, uniformity can beestablished and maintained in the resulting products to satisfypredetermined conditions. Where different conditions are required tosuit different products or uses of the products, the control timeperiods may be varied in all or some of the steps of the method.

Having fully described our invention, what we clallim as new and desireto secure by Letters Paten is: i

' 1. A method of treating bobbin bodies including a strand of threadcross wound on a core for retaining the thread against inadvertentunwinding and for retaining the mass of wound thread on the core in theabsence ofretaining discs, which comprises the steps of arranging groupsof bodies freely in an open work supporting member, submerging saidmember with said bodies therein in a fluid, maintaining the bodies inthe fluid for a predetermined period of, time to saturate all of thewindings of the strand on each of said bodies, then removing the memberand said bodies from the iluid and rotating said member at high speedwith a resultant movement of the bodies relatively to and toward theperipheral Vwall of the work supporting member to dispense surplus fluidfrom the strand windings of said bodies and all iiuid intervening thestrand windings through said member by subjecting said bodies as a wholeto the action of centrifugal force, then removing all of the bodiescollectively and simultaneously from said member, and then drying saidbodies to`harden the fluid applied to the strands thereof, producing inthe resulting wound bodies slight adhesion between contacting portionsonly of adjacent strandkwindings preventing accidental displacement andinadvertent unwinding of the windings from said bodies.

2. A method of treating bobbin `bodies including a strand of threadcross `wound on a core for retaining the thread against inadvertentunwinding and for `retaining the mass of wound thread on the core in theabsence of retaining discs, which comprises the steps of mounting aplurality of said bodies freely in an open work basket supported-on arotatable spindle, submerging the basket with the bodies therein in waxheated at a predetermined temperature, maintaining the i bodies in theheated wax for a predetermined vening the windings by subjecting saidbodies as a whole to the action of centrifugal force. controlling thetime of rotation of the spindle to insure removal of the wax, thenremoving all of the bodies collectively and simultaneously from saidbasket, and then drying said bodies to harden the wax applied to thestrands thereof, producing` in the resulting wound bodies slightadhesion between contacting portions only of adjacent strand windingspreventing accidental displacement and-'- inadvertent unwlnding of thewindings from said bodies.

, 3. A method of treating bobbin bodies includins a strand oi threadcross wound on a core for retaining the thread against inadvertentunwinding and for retaining the mass of wound thread on the core in theabsence of retainin discs. which comprises heating a large quantity ofwax to a predetermined and controlled temperature. submerging aplurality of bobbins freely arranged in an open work container in saidheated wax, controlling the time period of submersion of the bobbins inthe wax to saturate all of the windings of the thread on each of saidbobbins, then removing the bobbins and said container vfrom the wax androtating the container at high Speed surplus wax iromrthe bobblns bysubjecting said bodies as a whole to the action of centrifugal force,then removing all of the bobbins simultaneously vfrom said container.and then drying the bobbins to set the wax on the threads thereof so asto establish slight adhesion between contacting portions only ofadjacent thread windings on each bobbin to retain Vthe thread againstaccidental displacement and inadvertent unwinding.

4. A method of `treating bobbin bodies including a `strand of threadcrosswound on a core for 'retaining the thread 'against inadvertentunwind'- ing and for retaining the mass of wound thread on the core inthe absence of retaining discs, which comprises establishing twostations, namely a loading 'and unloading station and a submergingstation, depositing a predetermined number of strand bodies freely in abasket type carrier at the loading station, then moving the carrier tothe submerging station and submerging all of the bodies in thecarrier inheated wax at said submerging station. maintaining said bodies submergedin the wa'x sumciently to saturate all of the windings of said bodies,then moving-the carrier to remove the bodies from the heated wax whilemaintaining said bodiesat said station and` abovethe heated wax, thenrotating the carrier at high speed with al resultant movement of thebodies relatively to and toward the peripheral wall of the carrier toremove all surplus waxl from said bodies' by subjecting said bodies as awhole to the `action of centrifugal force, then returning o the carrierto the first named station and unloading the treated bodiessimultaneously from the basket of said carrier, and then drying saidbodies to harden the wax and producing in the resulting bodies slightadhesion between contacting portions only of the windings on said bodiesprevent- 40 ing accidental displacement and inadvertent unfor acontrolled period o! time with a resultant movement of the-bodiesrelatively'to andtoward winding of the strands from said bodies.

mivrsl' mamen. wma n. Moam.

